isMinifyEnabled() 已弃用。有什么选择？

Question

我使用下面的代码根据产品口味自动生成 pro guard 映射文件。

buildTypes {
        release {
            minifyEnabled true
            shrinkResources true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'

            applicationVariants.all { variant ->
                if (variant.getBuildType().isMinifyEnabled()) {
                    variant.assemble.doLast {
                        copy {
                            from variant.mappingFile
                            into "${rootDir}/proguardTools"
                            rename { String fileName ->
                                "mapping-${variant.name}.txt"
                            }
                        }
                    }
                }
            }

        }
    }

将 android studio 升级到 3.0 后，它显示警告说 isMinifyEnabled() 已弃用，我找不到任何解决方案或替代方案 isMinifyEnabled()。提前感谢任何帮助？

Answer 1

我的解决方案是将 variant.getBuildType().isMinifyEnabled() 替换为 variant.mappingFile.exists()。

我之前的位置：

applicationVariants.all { variant ->
    if (variant.getBuildType().isMinifyEnabled()) {
        variant.assemble.doLast {
            (new File(variant.mappingFile.parent, "$archivesBaseName-$variant.baseName-mapping.txt")).delete()
            variant.mappingFile.renameTo(variant.mappingFile.parent +
                    "/$archivesBaseName-$variant.baseName-mapping.txt")
        }
    }
}

我将其替换为：

applicationVariants.all { variant ->
    variant.assemble.doLast {
        if (variant.mappingFile != null && variant.mappingFile.exists()) {
            def mappingFilename = "$archivesBaseName-$variant.baseName-mapping.txt"
            (new File(variant.mappingFile.parent, mappingFilename)).delete()
            variant.mappingFile.renameTo(variant.mappingFile.parent +
                    "/" + mappingFilename)
        }
    }
}

或者在你的情况下替换

applicationVariants.all { variant ->
    if (variant.getBuildType().isMinifyEnabled()) {
        variant.assemble.doLast {
            copy {
                from variant.mappingFile
                into "${rootDir}/proguardTools"
                rename { String fileName ->
                    "mapping-${variant.name}.txt"
                }
            }
        }
    }
}

与：

applicationVariants.all { variant ->
    variant.assemble.doLast {
        if (variant.mappingFile != null && variant.mappingFile.exists()) {
            copy {
                from variant.mappingFile
                into "${rootDir}/proguardTools"
                rename { String fileName ->
                    "mapping-${variant.name}.txt"
                }
            }
        }
    }
}

请注意我如何重新安排代码中的条件，以便仅在所有其他组装任务完成后才搜索映射文件。

Answer 2

来自 Android Gradle 插件 3.0 的 sources：


    /**
     * Returns whether minification is enabled for this build type.
     *
     * @return true if minification is enabled.
     * @deprecated remember that this flag means that some "ProGuard-like" tool has run, it does not
     *     say if the tool was used to obfuscate and/or minify. In build system code this
     *     information is available elsewhere and should be used instead of this method.
     */
    @Deprecated
    boolean isMinifyEnabled();

该文档含糊不清，没有直接说明使用什么。在blame we can see, that it's Michał Bendowski that has performed those changes, from whom I have asked to help out with that question in twitter。回复如下：

我也看不到 latest commit 中的 @Deprecated 注释（在撰写本文时它是 android-8.0.0_r34），这意味着 API 是未已弃用。

作为修复，您可以取消将此行放在 if 语句之前的警告：


    //noinspection GrDeprecatedAPIUsage
    if (variant.getBuildType().isMinifyEnabled()) {
        ...
    }

isMinifyEnabled() 已弃用。有什么选择？

isMinifyEnabled() is deprecated. What is the alternative?

android

gradle

android-gradle-plugin

android-build

android-gradle-3.0